Plug-in electromagnetic flowmeter scale application in mine water treatment

Abstract: the plug-in electromagnetic flowmeter scale application in mine water treatment information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Plug-in electromagnetic flowmeter in the application of the mine water treatment in order to reduce pollution, water saving and emissions reduction, must be on the water for living, industrial water, circulating water and discharge of sewage according to measurement and control. Flow measurement in total amount control and water resources. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a plug-in electromagnetic flowmeter scale application in mine water treatment article details. Plug-in electromagnetic flowmeter in the application of the mine water treatment in order to reduce pollution, water saving and emissions reduction, must be on the water for living, industrial water, circulating water and discharge of sewage according to measurement and control. Flow measurement in total amount control and quota management of water resources and occupies an important place in the petrochemical production and process control. 1 technical analysis. 1 working principle of the working principle of the plug-in electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, measuring flow, the liquid flows through the perpendicular to the flow direction of magnetic field, induced a and average flow velocity ( Volume flow) Proportional to the voltage. The induced voltage signal by two direct contact with the liquid electrode detection, and through the special cable sent to intelligent transmitter, intelligent transmitter according to the size of the electric potential and magnetic flow mathematical model calculation, the converted to traffic signal, Including instantaneous flow and cumulative amount) Again, according to the on-site will flow standard 4 ~ 20 ma, 1 ~ 5 VDC output signals to the flow secondary instrument or DCS. 1. 2 of plug-in electromagnetic flowmeter is mainly composed of sensors, smart transducer and special cable. （ 1) Sensor is composed of the electrodes and the excitation coil, its action is based on a conductive medium ( Fluid) The speed of flow through the excitation coil differently on the electrode corresponding induction electric potential ( 5 ~ 60 mv) 。 （ 2) Is the role of intelligent transducer sensor induction electric potential signal amplification, and then according to the flow mathematical model and the formula to calculate the electric potential, flow results and standard traffic signal. Various flow parameters adjustment and calibration of parameter setting in intelligent transmitter. （ 3) The role of special communication cable millivolt voltage signal is sent sensor to the intelligent transmitter, intelligent transmitter to provide oscillating voltage excitation coil. Because the electric potential signal is 5 ~ 60 mv of weak signal, is the high frequency excitation signal low-rising value oscillation signal, so the cable shielding should be fully considered and anti-jamming. Is directly proportional to the length and the sectional area of the cable, and is directly proportional to the conductivity of the medium, the stronger the conductive properties of transmitting the farther the distance, average transport distance of 20 ~ 500 m. 1. 1 3 installation requirements. 3. 1 to ensure sufficient straight pipe fluid in direction, pipe diameter, and valve opening change, will produce eddy current and flow distortion, this will affect the sensor electrode measurement, which affects the precision of the instrument. So as far as possible to leave the bend a certain distance, hand valve, regulating valve and other parts. Pipe size table, D, L said to components such as valves or bend the sensors. 1. 3. 4 to ensure good grounding sensor output signal of the ground should be measured medium and electrical connections. When cutting lines of magnetic force fluids flow signal, the fluid itself as a zero potential, an electrode on a positive potential, another electrode to produce negative potential, constantly changes. Therefore, the input point converter ( Signal cable shielding layer) Must together with zero potential and conducting fluid, so as to constitute a symmetric input circuits. Converter input point through the sensor output signal of the ground and the flow of electrical connectivity. As a result of the sensor output signal is very small, only a few millivolts, in order to improve the anti-interference ability, input circuits of zero potential must be grounded. Due to the general metal pipe connect with the earth, medium flow through the metal pipe and the electrical connections, so does not require electromagnetic flowmeter set up a grounding device alone, especially small diameter electromagnetic flow sensor. If non-metallic pipelines, it is must and separate grounding line connection. 1. 3. 5 ensure correct sensor insertion depth due to the phenomenon of laminar flow of fluid in pipe, fluid near the pipe wall velocity slower, close to the center of the pipe fluid flow faster, according to the calculation of the pipe / 8 D zui close to the average velocity of the fluid. When installation to calculate the length of the pipe wall thickness and the flange of pipe mouth, make sure that the sensor electrodes deep in 8 D/position. But not all of the insert flowmeter sensors are installed in the pipeline of D / 8 position, there are a few installed D / 2 position, the line before the installation must carefully study the installation instructions. Conclusion 2 plug-in electromagnetic flowmeter is suitable for large diameter pipeline installation. Φ 250 mm above the line application plug-in electromagnetic flowmeter is better than flange ratio of electromagnetic flowmeter, and the larger the diameter ratio of the obvious. Zui features can significantly installation, pipe wall thickness has no effect on the basic, but its installation technology is complex, if improper installation will cause greater error, according to the experience of using in not allowed shutdown and large diameter pipeline plug-in electromagnetic flowmeter should be installed on an economically viable option. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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